Blood test tube



June 18, 1940. v. H. GRIER BLoon TEST TUBE Filed Nov. 3, 1939 1n ventor A tomeys Patented June 1s, 1940 2,204,547

FUNITED STATES PATENT OFFICE BLooDl TEST TUBE Virginia. H. Grier, Pleasantville, N. J. Application November s, 1939, serial No. 302,763 3 claims. (ci. 12s- 272) This invention relates broadly to tubes or apas shown in Figure 1 is adapted to snugly re-` paratus used in testing blood, that `is to say for ceive therein the open end of the transparent obtaining a sample of blood `for analytical puror glass cover 6. i a poses; and the invention has particular refer- In assembling the elements just described, the

l ence to improved means for connecting or sealstem 6 is inserted in the bore I2 of the stopper `5 ing the joint between the vial or tube and the I0 and the stopper IIJ then placed in the open cover member. end of the vial 5. The stem 6 is then connected The invention together with its objects and with a vacuum pump and the vial 5 then evacuadvantages will be best understood from a study ated after which the outer end of the stem `I is f 0f the following description taken in connection sealed as. at 6a by heat or in any other suit- 10 with the accompanying drawing wherein: able manner. The connecting tube 'I next has Figure 1 isalongitudinal sectional View through its open end sleeve on the projecting or sealed a vial and associated parts illustrating the apend of the stem 6 after which the base end of plication of the invention. the needle 8 is inserted into the connecting tube Figure 2 is a sectional view through a stopper 'I at the thickened closed end of said tube. Final- 15 forming part of the assembly shown in Figure 1. ly the glass or transparent covert!` is positioned r Figure 3 is a view similar to Figure l but illusover the needle assembly with the open end of trating the application of the invention to thev the cover 9 fitting snugly within the cup or Vacuum Keolel tube type of blood testing appasocket Ifl,` the cover 9 being evacuated and the l ratus. socket or cup I4 forms a seal for the evacuated 20 Figure 4 is a sectional View through a stopcover 9. The entire assembly is, finally, sterilized per forming part of the assembly shown in Figin live steam or as otherwise found desirable. ure 3, and Now when using the sterilized assembly the Figure 5 is a top plan view of either the stopvacuum is iirst released by inserting a pointed per shown in Figure 2 or the stopper shown in instrument into the socket or cup I4 along the 25 Figure 4. side of the cover 9. The cover 9 may then be Referring more in detail to the drawing, parremoved by drawing it from the cup or socket ticularly to the assembly shown in Figure 1, it I 4 and `thereby expose the needle 8. The opera- Will be seen that 5 indicates generally the conven- `tor then inserts the needle 8 into the patients tional glass vial; while 6 indicates the glass stem; vein and the sealed end of the stem 6 being b-ro- 30 'I the rubber or elastic connecting tube, 8 the ken in any suitable manner, suction created by needle that is connected through the medium the vacuum in the vial 5 will serve to draw the of the tube 'I with the stem 6, and 9 the glass i blood from the body through the needle 8, conor transparent cover which fits over and houses necting tube 'I,"and stem 6, into the vial to be the needle 8; connecting tube l, and stem 6. later analyzed. l 35 A salient feature of the present invention is Thus it will be seen that in accordance with the the rubber or elastic stopper indicated generally `present invention provision is made for evacuby the reference numeral I0. ating and sealing the glass cover 9 and thus In the form of the invention shown in Figpermitting the entire assembly to be sterilized by ures 1 and 2, the stopper I0 is formed of rubheat to the end that such assembly will retain 40 ber and comprises a substantially cylindrical body its sterile condition instead of becoming unsanione end of which ts snugly in the vial 5 as shown. tary as generally results from bacteria entering The body of the stopper I0 also is provided With under the cover 9 through the usual cotton packan outstanding flange or collar II that abuts the ing Which is employed at the joint between the adjacent end of the vial 5. The bodyof the cover 9 and the stopper. However the cup I4 45 stopper IIJ is provided With an axialbore I2 eliminates the use of `such packing and thus and `at its inner end a counter bore I3 to acserves to maintain the cover 9 sealed against commodate an end portion of the glass stem 6 the entrance thereinto of any bacteria or foreign as shown. matter.

Also, and forming a very essential feature of It also will be apparent that with this inven- 50 the present invention is the provision of the intion the seal between the cover 9 and the vial 5 tegral socket or cup 14 formed on the stopper or stopper for the vial can be easily broken and I 0 at the outer end of the latter and which is without danger to the lingers of the operator, it of a diameter materially greater than the diambeing known that where the sealedglass cover eter of the stem 6. Thus the cup or socket I4, is employed there is much danger of the opera- 55 zif tors fingers being cut or scratched on sharp glass resulting from the breaking of the seal.

The assembly shown in Figure 3 illustrates the application of the invention to the vacuum Keidel type of tube. In this connection then it will be noted that the stopper therein indicated by the reference numeral I 0a is designed to accommodate the Keidel tube 5a., and to that end consists of a relativelt7 short bodyprovided with an opening I5 therethrough to accommodate the stem 6a thatfis integral With the tube 5a. Also the body of the stopper Illa is provided with a concave recess I6 to t on the end of the tube 5 Where said end joins with its integral stem 6a.

The stopper Illa is also provided at its outer end with the cup or socket Ma to accommodate the open end of the cover member 9a. and for sealing said end of the cover upon completion of the assembly of the elements. It is therefore believed that afurther description of this :assembly is unnecessary,`the operation being substantially the same in connection with this assembly as that described in connection with the assembly shown in Figure 1.

From the above it will also be apparent that the 'invention Will have the same advantages when applied either to the ordinary Vial type of bloedtest tube', or the Keidel type of blood test tube.` v Having thus described the invention What is claimed as' new is:

l 1'J'In' a' blood testing tube assembly embodying a testing tube to be evacuated, a scalable stem for said tube, a needle, an elastic tube connecting the needle with said sealable tube, and a transparent cover for said needle, connecting tube and sealable tube; a stopper for said vial provided with an axial opening accommodating said sealable tube, and said stopper being provided With means for sealing said cover when the aforementionedelements are completely assembled.

2. 4In, a bloodtesting tube assembly embodying a testing tube to be evacuated, a sealable stem for said tube, a needle, an elastic tube connecting the needle with said scalable tube, and a transparent cover for said needle, connecting tube and sealable tube; a stopper for said vial provided with an axial opening accommodating said sealable tube, said stopper being provided with a socket receiving and substantially sealing the open end of said cover.

3. In a blood testing tube assembly embodying a testing tube to be evacuated, a scalable stem for said tube, a needle, an elastic tube connecting the needle with said scalable tube, and a transparent cover for said needle, connecting tube and sealabletube; a stopper for said vial provided With an axial opening accommodating said sealable tube, said stopper being provided with a socket receiving and substantially sealing the open end of saidcover, said stopper and associated vsocket being of elastic material.

VIRGINIA H. GRIER. 

